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Quantification of global fossil fuel carbon dioxide (CO2) emissions at fine spatial resolution is emerging as a critical need in climate change research and policy-making. Numerous studies have constructed CO2 emission inventories by using spatial proxies, such as radiance-calibrated nightlight and population density, to downscale national emission data into finer spatial scales. However, only using...
This paper proposes an approach for image segmentation of the urban traffic scene captured from a car-mounted camera. First of all, an improved SIFT feature matching algorithm is adopted for extracting 2D keypoints of the scene. Tracking the 2D keypoints generates the 3D points clouds that can estimate the 3D world structure and motion features. And then Multiple Kernels Support Vector Machines (MKSVM)...
Paving overlay asphalt on an old road is generally adopted in road maintenance projects. Highway project is a linear project, diseases and the maintenance requirements of the component sections are very different. Firstly, the paper analyzes the decision-making process of maintenance program for asphalt pavement. Then, it points out that the road should be classified into some sections rationally...
It is serious that the early damage of asphalt mixture bridge pavement of our country, the damage of waterproof binding course is a major reason that causes the disease of bridge pavement, it is one of the most valid measures that resolve the weak quality problem of cementing material to guarantee and improve the endurance of bridges. Aim at the fatal weakness of waterproof binding course of traditional...
The damage of waterproof is a main reason that causes the bridge pavement diseases. Controlling the quality of cementing material is an effective measure to improve the endurance of bridge pavement. 'Two asphalt one aggregate' is put forward to solve the problem of 'white aggregate' appeared on the shearing destruction interface of synchronous crushed stone, The asphalt optimum dosage of 'two asphalt...
In order to make detailed analysis on the mechanical performance and load carrying capacity of cast-in-place bored pile with post grouting technique for highway bridges and study influence factors, FEM method has become one of the most essential assistant way. Based on two groups of trial pile in the same geological region of WEIHE bridge, which located at new airport construction project of Shaanxi...
This paper has presented a novel approach designed to realize multi-section short-term traffic flow synchronization forecasting in terms of road network. First, the road network is split into sub networks in accordance with traffic flow spatial-temporal characteristics. Second, chaos analysis method is proposed to forecast short-term traffic flow. Short-term traffic flow characteristics have been...
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